NATURE THREATENED 
Anyone travelling in England 
and Germany, or, in fact, in most parts 
of the world, may see for himself that 
the constant cultivation of the land and 
the growth of industrial undertakings 
have threatened, and in many places 
considerably damaged, interesting tracts 
of country as well as natural monu- 
ments. From the economic aspect, 
this is immaterial; and it would even 
be justifiable, from such a point of 
view, if man were to bring under his 
control almost the whole realm of 
nature. But, on the other hand, from 
the scientific and aesthetic standpoints, 
it is much to be regretted that so many 
types of scenery and of the vegetable 
and animal worlds should pass away 
irrevocably. In his book ''Unto this 
